INCA – International Nature and Cultural Adventures

Marikra Roberson, co-founder of INCA, wears a red parka and smiles as emperor penguins frolic in the background

INCA (International Nature and Cultural Adventures) has been delivering travel dreams since 1976.

We are committed to increasing the awareness of human responsibility toward the environment; working with conservation organizations to protect the animals, plants, and artifacts of the special places we visit; and supporting the local economies by employing local associates who share our vision. As an INCA traveler, you participate in sustainable pleasure in the wonders of our world.

Why Travel with International Nature and Cultural Adventures (INCA)

At INCA we are discerning, and particular, and have a passion for perfecting the details. We cherish adding the personal touches and the unexpected treats. We see ourselves as being in the business of “delivering dreams.” Our travelers tell us that we do it well, frequently exceeding their expectations. We like to hear that, but we don’t dare let it go to our heads. We know we have to keep our attention on every detail, big and small.

We believe that putting dream adventures together is a lot like making a fine necklace. Elegance and beauty come from selecting the best pearls and stringing them strongly, and artfully, together. In remote and challenging parts of the world, the string is always tenuous. That keeps us on our toes, ready to round up any pearls that try to escape. Once we have done that, we feel good about being trusted with your travel dreams.

Our Story

INCA (formerly Inca Floats, Inc.) began in the 1970s as a family adventure when Bill Roberson, a scientist and professor, and his two daughters, Kim and Marika, travelled to Peru and the Galapagos Islands. They had such an adventurous, entertaining and educational time that they couldn’t wait to share it with their friends. And so a company was born.

Bill returned to the Galapagos to become a licensed naturalist guide under the auspices of the Galapagos National Park. Bill led trips in the Galapagos and eventually befriended Rolf Sievers, who today owns and operates the yachts Integrity and Reina Silvia. Rolf emigrated to the Galapagos from Germany as a boy and his first job was tending the seismograph at Charles Darwin Station. Rolf eventually became manager of the station, a position he held for a decade before leaving and starting a yacht operation. Today Rolf and his sons ensure the yachts are impeccably maintained and exceed our clients’ high expectations.

Sustainable Adventures with INCA

In 1996 Inca Floats became INCA, International Nature & Cultural Adventures, to reflect our adventures outside of South America in Turkey, Africa, Alaska and Antarctica.

INCA is now more than the Roberson family supplying, guiding, and cooking as on our early treks. We have grown at home and abroad with dedicated, talented staff here in Oakland and in each of our destinations.

Along the way, we have continued our devotion to making each trip enriching—as hassle-free and as comfortable as possible for each of our travelers—without sacrificing any of the adventures.

Sample Itineraries

Travel Associations

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